One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,8,11)(7,10,12,9)(13,14,17,15)(16,19,20,18)(21,22,26,29)(23,27,31,24)(25,28,34,36)(30,33,35,32)(2,4)(5,6)(7,9)(8,11)(10,12)(21,23,26,31)(22,24,29,27)(25,30,34,35)(28,32,36,33)(1,2)(3,4)(5,7)(6,9)(8,12)(10,11)(13,15,17,14)(16,19,20,18)(21,23)(22,27)(24,29)(25,30)(26,31)(28,33)(32,36)(34,35)(5,7)(6,10)(8,12)(9,11)(13,16)(14,18)(15,19)(17,20)(21,24,26,27)(22,23,29,31)(25,33,34,32)(28,35,36,30)(5,6)(7,9)(8,11)(10,12)(21,25)(22,28)(23,30)(24,32)(26,34)(27,33)(29,36)(31,35) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.